“Unnatural” Selection
Humans driveevolutionof conch size
Marzo 21, 2014
Thousands of years of hunting has turned a substantial meal into a bite-sized snack.
Thousands of years of hunting has turned a substantial meal into a bite-sized snack.
A Smithsonian emeritus scientist takes a field trip to some of Panama’s most important known marine fossil deposits for a quick lesson the age of the Ithsmus of Panama.
20-million-year-old fossil seeds shed light on origins of plant biodiversity in Panama.
Fossil reefs from around the Caribbean show how biologically rich these ecosystems once were — and provide goalposts for conservationists hoping to restore them.
It is much faster to learn to recognize a new prey item from a neighboring species, than to learn by trial and error.
What slows or stops a disease epidemic if the pathogen is still present? It appears that wild frogs are becoming increasingly resistant to the chytrid fungal disease that has decimated amphibian populations around the world.
About 66 million years ago, a radical change on the Earth filled tropical forests with flowers. A new catalog of fossil pollen grains may hold an explanation.
Smithsonian scientists who documented massive mortality of corals and reef organisms meticulously studied one of the apparent causes: oxygen deficiency. A Smithsonian paleobiologist asks if the recent fossil record shows signs of similar hypoxia events.
Coral reef fish often see a very different seascape that humans do. Using the evolutionary laboratory created by the Isthmus of Panama, Michele Pierotti is learning exactly how they view their underwater world.
Research projects in our lab combine approaches from behavioral ecology, functional morphology, ethology and evolution of behavior. Our work focuses mostly on the ultimate and proximate causes of behavior in an ecological and social context, with an emphasis on how ecological or social...